author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:16:41 +0100 | |
branch | RCL_3 |
changeset 30 | 7e817e7e631c |
parent 0 | 0e761a78d257 |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
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* Copyright (C) <2003> David Schleef <ds@schleef.org> |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public |
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* License along with this library; if not, write to the |
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*/ |
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|
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/* |
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* This file was (probably) generated from |
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* gstaudiofiltertemplate.c,v 1.14 2007-02-03 23:28:45 tpm Exp |
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* and |
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* $Id: make_filter,v 1.3 2004-04-19 22:51:56 ds Exp $ |
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*/ |
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#ifdef HAVE_CONFIG_H |
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#include "config.h" |
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#endif |
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#include <gst/gst.h> |
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#include <gst/audio/audio.h> |
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#include <gst/audio/gstaudiofilter.h> |
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#include <string.h> |
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GST_DEBUG_CATEGORY_STATIC (audio_filter_template_debug); |
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#define GST_CAT_DEFAULT audio_filter_template_debug |
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static const GstElementDetails audio_filter_template_details = |
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GST_ELEMENT_DETAILS ("Audio filter template", |
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"Filter/Effect/Audio", |
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"Filters audio", |
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"David Schleef <ds@schleef.org>"); |
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typedef struct _GstAudioFilterTemplate GstAudioFilterTemplate; |
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typedef struct _GstAudioFilterTemplateClass GstAudioFilterTemplateClass; |
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#define GST_TYPE_AUDIO_FILTER_TEMPLATE \ |
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(gst_audio_filter_template_get_type()) |
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#define GST_AUDIO_FILTER_TEMPLATE(obj) \ |
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_FILTER_TEMPLATE,GstAudioFilterTemplate)) |
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#define GST_AUDIO_FILTER_TEMPLATE_CLASS(klass) \ |
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AUDIO_FILTER_TEMPLATE,GstAudioFilterTemplateClass)) |
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#define GST_IS_AUDIO_FILTER_TEMPLATE(obj) \ |
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_FILTER_TEMPLATE)) |
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#define GST_IS_AUDIO_FILTER_TEMPLATE_CLASS(klass) \ |
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AUDIO_FILTER_TEMPLATE)) |
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struct _GstAudioFilterTemplate |
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{ |
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GstAudioFilter audiofilter; |
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}; |
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struct _GstAudioFilterTemplateClass |
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{ |
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GstAudioFilterClass parent_class; |
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}; |
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enum |
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{ |
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/* FILL ME */ |
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LAST_SIGNAL |
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}; |
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enum |
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{ |
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ARG_0 |
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/* FILL ME */ |
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}; |
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GST_BOILERPLATE (GstAudioFilterTemplate, gst_audio_filter_template, |
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GstAudioFilter, GST_TYPE_AUDIO_FILTER); |
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static void gst_audio_filter_template_set_property (GObject * object, |
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guint prop_id, const GValue * value, GParamSpec * pspec); |
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static void gst_audio_filter_template_get_property (GObject * object, |
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guint prop_id, GValue * value, GParamSpec * pspec); |
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static gboolean gst_audio_filter_template_setup (GstAudioFilter * filter, |
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GstRingBufferSpec * spec); |
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static GstFlowReturn gst_audio_filter_template_filter (GstBaseTransform * bt, |
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GstBuffer * outbuf, GstBuffer * inbuf); |
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static GstFlowReturn |
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gst_audio_filter_template_filter_inplace (GstBaseTransform * base_transform, |
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GstBuffer * buf); |
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#define ALLOWED_CAPS_STRING \ |
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GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS |
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102 |
static void |
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103 |
gst_audio_filter_template_base_init (gpointer g_class) |
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104 |
{ |
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GstAudioFilterTemplateClass *klass = (GstAudioFilterTemplateClass *) g_class; |
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GstAudioFilterClass *audiofilter_class = GST_AUDIO_FILTER_CLASS (g_class); |
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass); |
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GstCaps *caps; |
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109 |
|
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gst_element_class_set_details (element_class, &audio_filter_template_details); |
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111 |
|
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caps = gst_caps_from_string (ALLOWED_CAPS_STRING); |
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gst_audio_filter_class_add_pad_templates (audiofilter_class, caps); |
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gst_caps_unref (caps); |
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} |
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116 |
|
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117 |
static void |
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gst_audio_filter_template_class_init (GstAudioFilterTemplateClass * klass) |
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119 |
{ |
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GObjectClass *gobject_class; |
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GstBaseTransformClass *btrans_class; |
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GstAudioFilterClass *audio_filter_class; |
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123 |
|
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gobject_class = (GObjectClass *) klass; |
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btrans_class = (GstBaseTransformClass *) klass; |
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audio_filter_class = (GstAudioFilterClass *) klass; |
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127 |
|
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#if 0 |
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g_object_class_install_property (gobject_class, ARG_METHOD, |
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g_param_spec_enum ("method", "method", "method", |
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GST_TYPE_AUDIOTEMPLATE_METHOD, GST_AUDIOTEMPLATE_METHOD_1, |
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G_PARAM_READWRITE)); |
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#endif |
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134 |
|
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gobject_class->set_property = gst_audio_filter_template_set_property; |
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gobject_class->get_property = gst_audio_filter_template_get_property; |
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137 |
|
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/* this function will be called whenever the format changes */ |
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audio_filter_class->setup = gst_audio_filter_template_setup; |
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140 |
|
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/* here you set up functions to process data (either in place, or from |
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* one input buffer to another output buffer); only one is required */ |
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btrans_class->transform = gst_audio_filter_template_filter; |
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btrans_class->transform_ip = gst_audio_filter_template_filter_inplace; |
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} |
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146 |
|
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static void |
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gst_audio_filter_template_init (GstAudioFilterTemplate * audio_filter_template, |
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GstAudioFilterTemplateClass * g_class) |
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150 |
{ |
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GST_DEBUG ("init"); |
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152 |
|
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/* do stuff if you need to */ |
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} |
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155 |
|
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static void |
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gst_audio_filter_template_set_property (GObject * object, guint prop_id, |
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const GValue * value, GParamSpec * pspec) |
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{ |
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GstAudioFilterTemplate *filter; |
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161 |
|
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filter = GST_AUDIO_FILTER_TEMPLATE (object); |
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163 |
|
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GST_DEBUG ("set property %u", prop_id); |
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165 |
|
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GST_OBJECT_LOCK (filter); |
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switch (prop_id) { |
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default: |
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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break; |
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} |
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GST_OBJECT_UNLOCK (filter); |
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} |
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174 |
|
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static void |
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gst_audio_filter_template_get_property (GObject * object, guint prop_id, |
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GValue * value, GParamSpec * pspec) |
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{ |
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GstAudioFilterTemplate *filter; |
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180 |
|
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filter = GST_AUDIO_FILTER_TEMPLATE (object); |
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|
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GST_DEBUG ("get property %u", prop_id); |
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184 |
|
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GST_OBJECT_LOCK (filter); |
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switch (prop_id) { |
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default: |
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
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break; |
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} |
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GST_OBJECT_UNLOCK (filter); |
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} |
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193 |
|
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static gboolean |
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gst_audio_filter_template_setup (GstAudioFilter * filter, |
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GstRingBufferSpec * spec) |
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197 |
{ |
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GstAudioFilterTemplate *audio_filter_template; |
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199 |
|
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audio_filter_template = GST_AUDIO_FILTER_TEMPLATE (filter); |
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201 |
|
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/* if any setup needs to be done, do it here */ |
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203 |
|
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return TRUE; /* it's all good */ |
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} |
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/* You may choose to implement either a copying filter or an |
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* in-place filter (or both). Implementing only one will give |
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* full functionality, however, implementing both will cause |
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* audiofilter to use the optimal function in every situation, |
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* with a minimum of memory copies. */ |
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static GstFlowReturn |
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gst_audio_filter_template_filter (GstBaseTransform * base_transform, |
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GstBuffer * inbuf, GstBuffer * outbuf) |
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{ |
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GstAudioFilterTemplate *audio_filter_template; |
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GstAudioFilter *audiofilter; |
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audiofilter = GST_AUDIO_FILTER (base_transform); |
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audio_filter_template = GST_AUDIO_FILTER_TEMPLATE (base_transform); |
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/* do something interesting here. This simply copies the source |
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* to the destination. */ |
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memcpy (GST_BUFFER_DATA (outbuf), GST_BUFFER_DATA (inbuf), |
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GST_BUFFER_SIZE (inbuf)); |
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return GST_FLOW_OK; |
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} |
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static GstFlowReturn |
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gst_audio_filter_template_filter_inplace (GstBaseTransform * base_transform, |
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GstBuffer * buf) |
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{ |
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GstAudioFilterTemplate *audio_filter_template; |
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GstAudioFilter *audiofilter; |
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audiofilter = GST_AUDIO_FILTER (base_transform); |
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audio_filter_template = GST_AUDIO_FILTER_TEMPLATE (base_transform); |
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/* do something interesting here. This simply copies the source |
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* to the destination. */ |
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return GST_FLOW_OK; |
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} |
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static gboolean |
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plugin_init (GstPlugin * plugin) |
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{ |
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GST_DEBUG_CATEGORY_INIT (audio_filter_template_debug, "audiofilterexample", |
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0, "audiofilterexample"); |
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return gst_element_register (plugin, "audiofilterexample", GST_RANK_NONE, |
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GST_TYPE_AUDIO_FILTER_TEMPLATE); |
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} |
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GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, |
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GST_VERSION_MINOR, |
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"gstaudio_filter_template", |
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"Audio filter template", |
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plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN); |